JSFiddle - React, Tailwind, and code Playground

HTML

<table id="dataTable">
    <tr>
      <th>Codigo</th>
      <th>Descricao</th>
    </tr>
    <tr>
      <td>1</td>
      <td>José</td>
    </tr>
    <tr>
      <td>2</td>
      <td>Maria</td>
    </tr>
</table>

JavaScript

var table = document.getElementById( "dataTable" );
var tableArr = [];
for ( var i = 1; i < table.rows.length; i++ ) {
    tableArr.push({
        codigo: table.rows[i].cells[0].innerHTML,
        descricao: table.rows[i].cells[1].innerHTML
    });
}


console.log(tableArr);